Thread-advancing reel



March 13, 1956 D. Z. GOLDENBERG THREAD-ADVANCING REEL Filed Aug. 21,1951 IN VENTOR DAV/D Z. GOLDE/VBERG 8 A TTORNE Y United States PatentTHREAD-ADVANCIN G REEL David Z. Goldenberg, Cleveland Heights, Ohio,assiguor to Industrial Rayon Corporation, Cleveland, ()hio, acorporation of Delaware Application August 21, 1951, Serial No. 242,861

Claims. (Cl; 203183) This invention relates to thread-advancing reels.More particularly itrelates to reels of the interleaved bar member typegenerally supported only from one end. The reels advantageously can beused for withdrawing and forwarding formed thread without the benefit ofa guide for wiping off bath or treating liquids and for determining theinitial contact point of the thread with the reel.

In the manufacture of viscose rayon thread a withdrawing reel, or some,other form of thread take-up device, generally is positioned above thethread-forming means in a viscose thread coagulating bath. The formedthread is withdrawn from the bath by the reel, and the coagulating bathliquid adhering to the thread is shed therefrom generally through theuse of a wiper element such as a guide positioned ahead of thewithdrawing reel. In some rayon manufacturing processes the bath liquidsmay be carried by the thread onto the withdrawing reel and permitted toflow therefrom by gravity or thrown off by centrifugal forces. I

As thread withdrawing speeds are increased the quantities of withdrawncoagulating bath liquid are proportionately increased. Where guides areused at the higher speeds they have been found to be detrimental insteadof a help because they fail substantially to prevent the carryover ofthe adhering bath liquids to the reel. Also the thread contacts theguide only intermittently clue to the liquid that is carried to thustend to leave occasional impressions which tend to show up later indyeing, as random barre. bath liquids are carried onto the reel, andwhile on the reel the liquids interfere with the thread pitch; also, theliquids tend to prevent uniform contact of the thread with the reel barmembers disturbing the even travel of the thread. Thread travel is alsodisturbed when the bath liquids are thrown off by centrifugal forces.

In reels comprising two reel members, Where one is eccentric to theother, a thread generally contacts one of the reel members for a part ofthe reel circumference and the second reel member for the remainder ofthe reel circumference. The eccentric positioning of the one reel memberrelative to the other causes the thread to be advanced in a plurality ofgenerally helical turns, the turns forming a store of thread which maybe subjected to a desired chemical treatment.

It would be advantageous, in using a withdrawing reel, to omit a wiperguide and to rid the yarn and the reel of the carried-over bath liquidstending to disturb thread travel and, also, eliminate or minimize barreeffects on the thread. This invention provides for a reel having aconstruction which eliminates the need of a guide, readily disposes ofexcess bath liquids, maintains control of thread travel, and which alsopredetermines a store of thread on the reel. The reel includes a reelmember that is grooved substantially to the extent of the eccentricdistance from the othe reel member so that a thread placed in thisgroove resides therein for a part of the circumference of the rotatingreel, to be supported later upon rotation of the reel by the second reelmember and advanced away from the groove, and along the reel periphery.A further benefit derived from the thread groove is that the threaditself is formed into a more closely compacted bundle, the bath liquidsbeing forced by the compaction to the top of the thread with the furtherresult that a larger liquid accumulation is formed which is more rapidlyand easily thrown off. Also, a withdrawing reel having a starting groovewhich determines a thread take-up position on the reel and provided witha tapered end provides for a determination of a definite store of threadwhich store is not dependent upon the approximation of an attendingoperator. Further, the reel is adapted also for use on all subsequentthread treating stages.

The reel of this invention will be more thoroughly understood byreferring to the following specification and to the accompanyingdrawing, where:

Figure 1 represents, in plan, the grooved reel of this invention;

Figure 2 represents in section the reel of Figure l, the section beingtaken across line 22 of Figure 4;

Figure 3 is a partial section of a reel bar including the groove; and

Figure 4 represents the reel of Figure l in cross-section along line 44.

Referring to the drawing, Figure l discloses a threadadvancing reel ofthe type shown in Knebusch Patent No. 2,210,914. The reel comprises tworeel members 8 and 9, each of which has a periphery of a plurality oflongitudinally extending bar members 10 and 11, respectively. The reelmembers 8 and 9 are made of rigid construction and their bar members arearranged in an interdigitating relation.

The reel members 8 and 9 are supported for rotation by the reel shaft12. A rotation of the shaft 12 effects a rotation of the reel members 8and 9 and, because of their eccentric relation, thread is adapted to beadvanced lengthwise along the reel in the form of a general helix. Thereel is supported from one end by a flange 13 through which extends thereel shaft 12. The flange 13 is adapted Where no intermediate wipingguide is used the to be fastened or fixed against rotation in the faceof a spinning machine (not shown).

The arrangement of the various component parts of the reel of Figure 1is shown in greater detail in Figure 2. The reel members 8 and 9 aremounted about shaft 12. Reel member 8 is fixed to the shaft 12 so as torotate therewith while reel member 9 is supported for rotation about aneccentric sleeve 14 which is attached to the flange 13 and through whichthe reel shaft 12 extends. The bar members 11 of reel member 9 mergeinto a ring or flange 23 which is attached or fixed to a complementaryflange 24 by bolts 25. Flange 24 forms a part of hub 15 adapted torotate on spaced bearings 20, 21 positioned about an eccentric sleeve14. The axis of the eccentric sleeve 14 is offset and askew to the axisof the shaft 12, or to the axis of the reel member 8 which isconcentrically mounted on the shaft 12. The eccentric sleeve 14- is alsomounted about spaced bearings 18, 19 through which extends the reelshaft 12. The reel member 9 thus rotates about the eccentric sleeve 14which is held fixed against rotation by the attached flange 13. Theshaft 12 rotates within the eccentric sleeve 14 and, through bar to barcontact effects a rotati n of the reel member 9.

The bar members 11 of the reel member 9 are transversely notched orgrooved at a point where it is desired to withdraw thread from acoagulating bath. The depth of the notch or groove 28 as shown inFigures 2 and 3 is about equal to the amount of offset between the axesof the reel members. The grooves 25 serve as a guide for the threadadvanced over the reel. The form of the grooves is generally V-shaped soas to effect a compaction or a bundling of the filaments forming thethread.

The two member reel is generally positioned in the face of a spinningmachine so that the bar members of one reel member, or reel member 9 inthis instance, extend outwardly beyond the periphery of the bar membersof reel member 8 for about the upper half of the circumference of thereel (see Figures 4). When a thread is laid into the grooves 28 it iscarried by them for about the upper half of the reel periphery. Thegrooved bar members 11 or the grooved reel member 9 upon rotationrecedes within the periphery of reel member 3 for the lower half of thereel circumference, and the thread is then supported by the bar members10 of the reel member 8. Due to the askew relation between the reelmembers 8 and 9 the thread is advanced away in a normal manner from thegrooves 23 and along the reel periphery.

When the thread is in the grooves 23 of the bar members 11 it iscompacted or bundled and the liquid on the thread is forced outwardly tothe surface of the thread and onto the bars. The bath liquids readilyaccumulate above the thread in the grooves and on the bar members 11.,the increased liquid mass making it easier for gravity and centrifugalforces to fling it off the reel. By being compacted or bundled thethread is put in a better condition to be advanced over the remaininglength of the reel. Split turns of thread and ringers are advantageouslyminimized by the bundling and bath and guide eliminating grooves 28.

A further improvement in handling thread on a reel while it is advancedis effected by similarly tapering the ends of both sets of bars 16, 11at their ends, the taper being taken at a declining angle toward thecenter of the reel. While improvements in the handling of thread such asminimizing the formation of ringers or split thread turns have beennoted at various tapers of the bar member ends it has been found that abar member having a taper 30 at an angle of about 45 is mostadvantageous. The taper 30 tends to prevent the formation of ringers andsplit thread turns which tend to form at about the let-elf section ofthe reel. Further, a predetermined store of thread can be placed on thereel of this invention since it is automatically determined at thetake-up end by the grooves 28, and at the let-off end by the taper 30 ofthe bar members 10 and 11. of the reel.

1 claim:

1. A thread-store thread-advancing reel comprising, a shaft, at leasttwo reel members rotatably positioned about such shaft, each of saidreel members having a periphery of longitudinally extending bar members,said bar members being arranged in an interdigitating relation, one ofsaid reel members rotating about an axis concentric with the axis ofsaid shaft, the other of said reel members rotating about an axis thatis eccentric to the axis of said shaft and to the axis of the concentricreel member, the bar members of one of said reel members being groovedgenerally transversely to their lengths and at about one of their ends,and all of said bar members being tapered at their opposite ends forminga frusto-conical end on said reel.

2. A thread-store thread-advancing reel comprising, a shaft, at leasttwo reel members rotatably positioned about such shaft, each of saidreel members having a periphery of longitudinally extending bar members,said bar members being arranged in an interdigitating relation, one ofsaid reel members rotating about an axis concentric with the axis ofsaid shaft, the other of said reel members rotating about an axis thatis offset and askew to the axis of said shaft and to the axis of theconcentric reel member, and the bar members of said offset and askewreel member being grooved generally transversely to their lengths atabout one of their ends, said grooved bar members extending beyond theperiphery of said other reel member for about the upper one-half of thereel circumference and the grooves supporting the initial turn of athread helix.

3. A thread-store thread-advancing reel comprising, a shaft, at leasttwo reel members rotatably positioned about such shaft, each of saidreel members having a periphery of longitudinally extending bar members,said bar members being arranged in an interdigitating relation, one ofsaid reel members rotating about an axis concentric with the axis ofsaid shaft, the other of said reel members rotating about an axis thatis offset and askew to the axis of said shaft and to the axis of theconcentric reel member, the bar members of said offset and aslzew reelmember being grooved generally transversely to their lengths and atabout one of their ends, said grooved bar members extending beyond theperiphery of said other reel member for about the upper one-half of thereel circumference and the grooves supporting the initial turn of athread helix, and all of said bar members being tapered at theiropposite ends forming a frusto-conical end on said reel.

4. A thread-store thread-advancing reel comprising, a shaft, at leasttwo reel members rotatably positioned about the shaft, each of said reelmembers having a periphery of longitudinally extending bar members, saidbar members being arranged in an interdigitating relation, one of saidreel members rotating about an axis concentric with the axis of theshaft, the other of. said rcel members rotating about an axis that iseccentric to the axis of said shaft and to the axis of the concentricreel member, and the surface of one of the reel members being circularlygrooved at the thread take-up position of said reel, said groovebundling the thread on said reel prior to its further advance thereover.

5. A thread-store thread-advancing reel comprising, a shaft, at leasttwo reel members rotatably positioned about such shaft, each of saidreel members having a periphery of longitudinally extending bar members,said bar members being arranged in an interdigitating relation, one ofsaid reel members rotating about an axis concentric with the axis ofsaid shaft, the other of said reel members rotating about an axis thatis offset and askew to the axis of said shaft and to the axis of theconcentric reel member, and the surface of one of said reel membersbeing circularly grooved at the thread take-up position of the reel, thethread being initially laid in the groove which is positioned at aboutnear one end of the reel.

References Cited in the file of this patent UNITED STATES PATENTS2,674,022 Oppenlaender Mar. 16, 1937 2,284,489 Kline May 26, 19422,469,767 Hellbach May 10, 1949 2,558,335 Esmond July 3, 1951 2,578,330l-Zohorn Dec. 11, 1951 2,573,905 tanley Dec. 18, 1951 2,579,548Castellan Dec. 25, 1951 FOREIGN PATENTS 786,561 France June 8, 1935

